Ho model



PATENTED PEB. 23,1904.

No. 753,138. K H. C. HUBBELL.

PURTABLB ELECTRIC LAMP.

, APPLICATION IIIED JULY 2, 1903.

2'SEEETS-SHBBT'L N0 MODEL.

No. 753,138. PATBNTED FEB, 2s, 1904./

1H. G. HUBBBLL.v PORTABLE 'ELECTRIC LAMP. APPLICATION FILED JULY 2, 1903.A

N0 MODEL. ZYSHBBTS-SEBET 2.

fllllllllllllllllllull/A /r HARRY C. HUBBELL,

Patented February es, 1904.

PATENT OFFICE.

W. FULLER, OF NEWT YORK, N. lY. I

PORTABLE ELEGTRIGA LAMP".`

SPECIFICATION forming part of Letters Patent No. 753,138, dated February 23, 1904. Application iiled July 2, 1903. Serial No. 164,040. (No model.)Y

.To a/Z whom, it may con/cern;

Be it known that I, HARRY C. HUBBELL, a

citizen of the United States, residing at Brooklyn, in the county of Kings and State of New a portable electric lamp for miners use or for other purposes which will be safe, eicient, and durable.

Referring to the accompanying drawings, in which similar figures of reference indicate like parts, Figure 1 is a view in perspective of the exterior of a portable electric handlamp constructed in accordance with this invention. Fig. v2 is a view in elevation, showing in vertical sectionrthe. body ofV the lamp and its internal construction. Fig. 3 is a transverse sectional view through the upper portion of the body and cells of my improved lamp, made on the line 3 3 and looking inthe direction of the arrow shown in Fig. 2.

In the construction of the lamp the body is formedy of a box 1 of suitable material, preferably thin sheet-steel, which may be coated on the outside with .agate or porcelain. Upon one of the sides of the box 1 is secured a reilector 2, preferably of thin sheet-steel, and coated on the inside preferably with white porcelain. A thick oval or concave glass 3 is mounted in the front or the reflector, and its joint therewith and the joint of the reflector with the side of the box are made water and vapor tight by a suitable packing. Within the reflector 2 in the side of the box 1 isv mounted the electric-light bulb 4, which is electrically connected before the reflector is secured inplace.

A number of cells -as, for example, four-are located in the box 1 and rest on a block of wood 6, which serves merely as a base, and a iilling in the box to bring the tops of the cells 5 adjacent to the top oi' the box 1. The block of wood 6 is saturated or coated with paraiin to repel moisture. The

cells 5 are preferably Vof thin sheet-steel, and their tops are even with the top ofthe box 1, whereby when the cover or lid 7, with its felt or rubber gasket 8, is placed on top of the box it will cover the tops of the cells 5 and prevent their contents from slopping out or into each other. These cells 5 are lined on the sides with a suitable metal lining 9, such as thin sheet copper or brass or other metal which can be amalgamated and is not affected by the solution. A quantity oi' Zinc amalgam is placed in the bottom of each cell 5 in direct contact with it. Y

Passing through the center of the bottom of each cell 5 and insulated from it, as at 10, is an iron wire 11, extending upward nearly to the top of the cell and threaded at its ends, as at 12. The lower end ofthe wire 11 is secured to the bottom of the cell by a nut 13 and washer 14:, and its upper end is screwed into aniron disk 15. The wire 11 is protected from the solution by a tube 16, of glass or other suitable material. The tube. 16 also serves to sti-tien the wire 11 and prevent its bending.

Suspended from the disk 15 radially from its center are a number of nickel or iron nickelplated wires 17,screwed at their upper end into the disk 15 or otherwise suitably secured thereto. These wires 17 are surrounded by spongy or porous pure silver 18, which is wound or wrapped with cloth, paper, or other suitable material`19 to prevent its falling off from the wires 17 by a sudden jar and also to keep particles of Zinc or mercury from forming a contact with it. The cells 5 are partly filled with a solution 18 of caustic potash or caustic sodium. On charging the cells 5 by means of an electric current the porous or spongy silver absorbs oxygen, while hydrogen is given oli on the sides of the cell. On discharging the Zinc enters the solution from the amalgam in the bottom of the cell and the silver oxid is reducedto pure silver. On charging the cells the secondtime the zinc is deposited from the solution onto the amalgamated-copper lining of the cell, where it presents a much larger surface to the solution than it did when it was all contained in the OF BROOKLYN, NElW YORK, ASSIGNOR TO HORACE l silver pencils need be used in accordance With the storage capacity of the battery required.

The cover 7 is provided With a suitable bail or handle 20, connected by screw-rings 21 to a strap 22, fastened to the cover 7, and having holes at its ends-through which projects screw-threaded pins 23 on brackets 24, mounted on the sides of the box 1. rI he cover is secu-red in place by means of thumb-nuts 25, Which screw onto the pin 23.

It Will be understood that the cells may be insulated from each other by the use of any suitable or desirable insulating material.

By means of this invention an eicient and durable portable electric hand-lamp is provided Which Will afford a good strong light for a considerable length of time and Which is especially adapted for mines and other localities Where a naked light cannot be safely eX- posed. .The body of the lamp being sealed, as set forth, presents this advantage, and the contents are kept intact, besides dispensing With the use of acid and maintaining the efficiency of the lamp.

Having described my invention, I claim- 1. In a portable, electric, hand-lamp, a cell havingalining of metal capable of being amalgamated, and containing a Zinc amalgam, an alkaline solution, and silver oXid, suspended in said cell, and forming the cathode, as herein set forth.

'2. In aportable, electric, hand-lamp, a steel cell, having a lining of metal capable of being amalgamated, and containing a Zinc amalgam, an alkaline solution, and a number of silverloXid pencils suspended in said cell, and form- Wire, and forming the cathode, as herein set 4. In aportable, electric, hand-lamp, a body portion, consisting of a steel boX; a number of steel cells located in said box; each cell having its sides provided with a lining of metal capable of being amalgamated; a Wire proj ecting up from the bottom of each cell; aprotecting-tube inclosing the Wire; a zinc amalgam in the bottom of each cell; an alkaline solution in each cell; and one or more silveroXid pencils suspended from the upper end of each Wire, and forming the cathode, as herein set forth.

5. A portable, electric, hand-lamp, consisting of a box; a number of cells, located side by side in said box; each cell having its sides provided with a lining of metal capable of being amalgamated, and a Wire projecting up- Wardly from the bottom of the cell, With a tube surrounding said Wire; a Zinc amalgam in the bottom of each cell; an alkaline solution in each cell; one, or more silver-oxid pencils suspended from the upper vend of each of said Wires; and a cover and gasket fitting over the top of the boX and the tops of the cells, and sealing the same; and means for securing said cover and gasket in place, as herein set forth.

- In testimony whereof I have signed my name to this specification in the presence of tWo sub-- scribing Witnesses.

HARRY C. HUBBELL. Witnesses:

J. D. H. BERGEN, DE HART BERGEN. 

